Final answer:
The front end estimate of 33 1/3% is rounded to the nearest whole number, which is 30%, making the correct answer B.33%.
Step-by-step explanation:
The question is asking for the front end estimate of 33 1/3%. In mathematics, when we calculate a front end estimate, we typically round each number to the highest place value before performing any operations. In the case of 33 1/3%, we round it to the nearest whole number percent for simplicity. Since 33 1/3% is closer to 33% than it is to 40% or any other whole number percent, the best front end estimate is 33%. Thus the correct answer is B.33%.